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Bacterial Gastroenteritis01:18

Bacterial Gastroenteritis

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Bacterial gastroenteritis, characterized by diarrhea, abdominal cramps, and vomiting, is often caused by ingestion of contaminated food or water and is frequently associated with pathogenic Escherichia coli strains. These microbes exploit two principal mechanisms to inflict disease.Shiga toxin–producing E. coli, also referred to as STEC—notably O157:H7—release Shiga toxins that target ribosomes, blocking protein synthesis. The B subunit of the toxin binds the host glycolipid...
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Rous Sarcoma virus or RSV was discovered by F. Peyton Rous in the year 1911 as a filterable transmissible agent that could cause tumors in chickens. He won a Nobel Prize for this discovery in 1966. His experiments clearly demonstrated that some cancers could be caused by infectious agents and led to the discovery of many more cancer-causing viruses in animals as well as humans.
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Cholera is an acute gastrointestinal disease caused by the Gram-negative bacterium Vibrio cholerae. It is transmitted primarily via the fecal-oral route through the ingestion of contaminated water or food.Vibrio cholerae is a motile, Gram-negative bacterium of the family Vibrionaceae, primarily associated with waterborne outbreaks in areas with inadequate sanitation. Although over 200 serogroups of V. cholerae exist, only O1 and O139 are responsible for epidemic cholera. The O1 serogroup,...
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Viral genomes exhibit remarkable diversity in size, structure, and composition, influencing their replication strategies and interactions with host cells. These genomes consist of either DNA or RNA and may be linear or circular. Additionally, they can be single-stranded or double-stranded, with each configuration affecting how the virus propagates within a host. RNA viruses, for instance, generally have smaller genomes than DNA viruses, a factor that contributes to their high mutation rates and...
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RNA viruses are categorized into positive-strand, negative-strand, or double-stranded groups based on their genomic structure and replication mechanisms. This classification dictates how they exploit host cellular machinery for protein synthesis and replication. Some RNA viruses also utilize reverse transcription as part of their life cycle, further diversifying their replication strategies.Positive-Strand RNA VirusesPositive-strand RNA viruses have genomes that function directly as messenger...
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Assays for the Specific Growth Rate and Cell-binding Ability of Rotavirus
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Rotavirus.

Mathew D Esona1, Rashi Gautam1

  • 1Division of Viral Diseases, Gastroenteritis and Respiratory Viruses Laboratory Branch, Centers for Disease Control and Prevention, 1600 Clifton Road, Northeast, Mail Stop G04, Atlanta, GA 30333, USA.

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|May 26, 2015
PubMed
Summary
This summary is machine-generated.

Group A rotavirus (RVA) causes severe gastroenteritis in children. New molecular assays offer sensitive detection and characterization of RVA strains, aiding in patient treatment and monitoring of vaccine and wild-type strains.

Keywords:
Acute gastroenteritisMultiplex assaysNext-generation sequencingRotaTeq®Rotarix®RotavirusRotavirus vaccinesqRT-PCR

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Area of Science:

  • Virology
  • Pediatrics
  • Molecular Diagnostics

Background:

  • Group A rotavirus (RVA) is a primary cause of acute gastroenteritis (AGE) in young children globally.
  • The widespread use of Rotarix® and RotaTeq® vaccines has significantly decreased RVA-related AGE and mortality.
  • Accurate diagnosis and strain characterization are crucial for patient management and epidemiological surveillance.

Purpose of the Study:

  • To highlight the need for advanced diagnostic techniques for rotavirus.
  • To introduce new molecular assays for rotavirus detection and characterization.
  • To compare the sensitivity and specificity of novel assays against conventional methods.

Main Methods:

  • Development and validation of new molecular assays.
  • Application of high-throughput techniques for rotavirus detection.
  • Genotyping and full genome characterization of rotavirus strains.

Main Results:

  • New molecular assays demonstrate enhanced sensitivity and specificity compared to conventional methods.
  • These assays enable rapid detection and comprehensive characterization of rotavirus strains.
  • The techniques can differentiate between wild-type and vaccine strains (Rotarix®, RotaTeq®).

Conclusions:

  • Novel molecular assays are essential for accurate and timely diagnosis of rotavirus infections.
  • These advanced methods improve the monitoring of circulating rotavirus strains, including vaccine and wild-type.
  • The development of sensitive and specific assays supports effective public health strategies against rotavirus gastroenteritis.